NEW YORK, June 15 (Reuters) - The rising tensions over global trade policy are prompting some top-performing international fund managers to look for the companies that can emerge as winners.

Fund managers from firms including AllianceBernstein, Causeway Capital Management and Janus Henderson are adding to positions in companies ranging from Italy's largest bank to China's largest e-commerce company, all in hopes of avoiding the fallout from a global trade war.

Chief among the corporate attributes fund managers are now looking for are either a strong domestic business that would not be significantly affected by import tariffs, or a dominant market position, or intellectual property that would prompt customers to continue to buy its goods regardless of additional taxes.

"The impact of a tariff is becoming a bigger factor in our decision-making," said George Maris, a portfolio manager of the $2.2 billion Janus Henderson Global Select fund.

Maris, who said that he has been "tactically" trading more than usual because of the threat of tariffs, has increased his position in companies such as Chinese e-commerce giant Alibaba Group Holdings Ltd that are dominating their domestic markets.

U.S. President Donald Trump blasted Canadian Prime Minister Justin Trudeau as "very dishonest and weak" after the G7 summit in Canada last weekend and raised the prospect of tariffs on auto imports, a move that would impact the Canadian economy.

Those threats follow the Trump administration's plans to target more than 800 Chinese products with tariffs. The European Union, meanwhile, has challenged aluminum and steel tariffs imposed by the Trump administration at the World Trade Organization and has drawn up a list of goods it would hit with retaliatory measures.

The threat of tariffs, along with rising U.S. interest rates, helped sink global stock markets in February. Since then, major stock indices have recovered most of their gains, with the U.S. benchmark S&P 500 index up 4.0 percent for the year to date and the Stoxx 600 index of companies in the European Union up 1.0 percent over the same time.

Conor Muldoon, a portfolio manager of the $8.7 billion Causeway International Value fund, said that trade and other macroeconomic concerns are "presenting short-term opportunities." The fund has been increasing its position in Italian bank UniCredit SpA, for instance, after its shares sold off in March following elections that renewed concerns about whether the country could exit the eurozone.

Muldoon's fund is also increasing its position in pharmaceutical companies such as GlaxoSmithKline Plc and Japanese firm Takeda Pharmaceutical Co Ltd that have strong drug pipelines, he said. Shares of GlaxoSmithKline are up 19.5 percent for the year to date, while shares of Takeda are down 32 percent over the same time after it increased its $62 billion bid for London-listed Shire Plc.

Sammy Suzuki, a co-portfolio manager of the $77 million AB International Strategic Core fund, said that the threat of technological disruption in some markets was just as pressing a concern for some global companies as the impact of higher tariffs. As a result, his fund is focusing more on what he calls the "enablers", which are back-end tech firms that do not trade at as high valuations as companies like Amazon.com Inc and Netflix.

Spanish tech firm Amadeus It Group SA, for instance, provides the technology backing the reservation systems used by airlines including British Airways, Southwest, and Lufthansa Group. Shares of the company are up 20 percent for the year to date.

"Even if you wanted to, it's difficult to rip them out of these companies," he said.

Suzuki has also been increasing his position in European luxury goods makers such as Italian apparel company Moncler SpA and British alcoholic beverage company Diageo Plc , both of which make products that should not be significantly affected by rising global trade costs, he said.

"You can find tariff-resistant businesses that are in niches, but it takes work to find them," he said. (Reporting by David Randall; editing by Jennifer Ablan)